'concessioner' definitions:

Definition of 'concessioner'

(from WordNet)
noun
Someone who holds or operates a concession [syn: concessionaire, concessioner]

Definition of 'concessioner'

From: GCIDE
  • concessioner \concessioner\ n. someone who holds or operates a concession.
  • Syn: concessionaire. [WordNet 1.5]